Okoth , B.K . <br/><br/>
KLB TOP MARK SERIES PHYSICS  ;  KCSE REVISION.  
B.K.Okoth . 
 - 4th edition.  
 - Nairobi :  Kenya Literature Bureau ;  1990 
 - vii , 319 p . ;  col . illustrations.   17 cm . 
<br/><br/><label>ISBN: </label>978-9966-65-600-1 
<br/><br/><label>Dewey Class. No.: </label>530